Low Temperature & Cryogenic Check Valve

Low Temperature & Cryogenic Check Valve

Features

Bolted Cover
Swing Type Disc
6" & Larger With Eyebolt
4" & Larger With Eyebolt (300Lb)
By Pass on Request
Lever & Wight Optional

Specifications

Design: ASME B16.34/BS 1868
Face to Face: ASME B16.10
End to End: ASME B16.10
End Flange: ASME B16.5
BW End: ASME B16.25
Test: API 598
Special: NACE MR-01-75

Materials

part name Body, Bonnet, Disc, Stem Pin, Nut Double-Head Nut Sealing Surface Packing
materials A352-LCB, A352-LC3, A351-CF8 A182-F304 Cr-Mo Steel Cobalt-Based Alloy PTFE

Specifications

Type Nominal Pressure PN
(Lb) 		Normal Temperature Test Pressure
(MPa)		 Low Temperature Test Pressure
(MPa) 		Working Temperature & Applicable Fluid
shell sealing
DH44Y-150(Lb) 150 3.0 0.6 0.6 -46 °C
Ammonia, Liquid Nitrogen, Propane		 -101 °C
Ethylene, Carbon Dioxide		 -196 °C
Methane, Liquefied Natural Gas
DH44Y-300(Lb) 300 7.5 0.6 0.6
DH44Y-600(Lb) 600 15.0 0.6 0.6

ASME Pressure Class 150 Lb-Dimensions and Weights

Class 150 Lb-Dimensions and Weights of Low Temperature & Cryogenic Check Valve
NPS
d		 in 2 2-1/2 3 4 5 6 8 10 12 14 16 18 20 24
mm 50 65 80 100 125 150 200 250 300 350 400 450 500 600
L-L1
(RF-BW)		 in 8.00 8.50 9.50 11.50 13.00 14.00 19.50 24.50 27.50 31.00 34.00 38.50 38.50 51.00
mm 203 216 241 292 330 356 495 622 698 787 864 978 978 1295
L2
(RTJ)		 in 8.50 9.00 10.00 12.00 13.50 14.50 20.00 25.00 28.00 31.50 34.50 39.00 39.00 51.50
mm 216 229 254 305 343 368 508 635 711 800 876 991 991 1306
H
(open)		 in 5.31 6.10 6.61 9.37 9.80 10.91 13.35 15.67 20.67 21.77 22.99 26.30 28.03 29.13
mm 135 155 168 235 249 277 339 398 525 553 584 688 712 740
WT
(Kg)		 BF 17 21 29 42 69 74 108 177 282 372 570 665 900 1359
BW 13 17 24 35 57 62 96 158 238 324 483 548 782 1150

ASME Pressure Class 300 Lb-Dimensions and Weights

Class 300 Lb-Dimensions and Weights of Low Temperature & Cryogenic Check Valve
NPS
d		 in 2 2-1/2 3 4 5 6 8 10 12 14 16 18 20 24
mm 50 65 80 100 125 150 200 250 300 350 400 450 500 600
L-L1
(RF-BW)		 in 10.50 11.50 12.50 14.00 15.75 17.50 21.00 24.50 28.00 33.00 34.00 38.50 40.00 53.00
mm 267 292 318 356 400 444 533 622 711 838 864 978 1016 1346
L2
(RTJ)		 in 11.12 12.12 13.12 14.62 16.37 18.12 21.62 25.12 28.62 33.62 34.62 39.12 40.75 53.88
mm 283 308 333 371 416 460 549 638 727 854 876 994 1035 1368
H
(open)		 in 6.22 6.57 7.40 10.20 11.06 12.56 15.79 19.02 21.85 23.03 24.21 25.31 26.81 27.95
mm 158 167 188 259 281 319 401 483 555 585 615 643 681 710
WT
(Kg)		 BF 21 32 43 61 84 131 213 384 449 680 840 1025 1320 1960
BW 16 24 35 44 61 105 167 272 375 560 710 828 1070 1586

ASME Pressure Class 600 Lb-Dimensions and Weights

Class 600 Lb-Dimensions and Weights of Low Temperature & Cryogenic Check Valve
NPS
d		 in 2 2-1/2 3 4 5 6 8 10 12 14 16 18 20 24
mm 50 65 80 100 125 150 200 250 300 350 400 450 500 600
L-L1
(RF-BW)		 in 11.50 13.00 14.00 17.00 20.00 22.00 26.00 31.00 33.00 35.00 39.00 43.00 47.00 55.00
mm 292 330 356 432 508 559 660 787 838 889 991 1092 1194 1397
L2
(RTJ)		 in 11.62 13.12 14.12 17.12 20.12 22.12 26.12 31.12 33.12 35.12 39.12 43.12 47.25 55.38
mm 295 333 356 435 511 562 664 791 841 892 994 1095 1200 1407
H
(open)		 in 7.76 8.15 9.09 11.06 12.56 14.25 17.20 19.39 20.79 22.52 25..98 28.35 29.37 37.80
mm 197 207 231 281 319 362 437 490 528 572 660 720 746 960
WT
(Kg)		 BF 36 49 68 111 164 230 416 673 875 944 1220 1620 2120 3100
BW 28 40 57 83 152 191 361 543 770 773 1015 1350 1750 2520